To answer this, you would use the formula for area of a parallelogram. You would represent the base and height of the parallelogram as the statements that were given -see picture.
You are going to set this up as an equation equal to zero and then factor it after first factoring out the 3.
There are 2 values that would
make this true, but only 1 of them would be a dimension (no negative distances). See the work in my picture.